Comprehensive analysis of all types of startup and shutdown class failures

Big home computers have been the most troubled or most difficult to solve for so long because of computer startup or computer shutdown, this type of failure does There are a lot of, today this tutorial is for everyone to inventory all types of startup and shutdown class failures.

I. Definition example

Faults related to the startup and shutdown procedures. Startup refers to the problem that occurs from the completion of the self-test to the entry into the operating system application interface; shutting down the system refers to all the processes from when the button is clicked to when the power is turned off.

Second, the possible failure phenomenon

1, the start of the process of crash, error, black screen, repeated restart, etc.;

2, a file error reported during the startup process;

3, during the startup process, always perform some undesired operations (such as always disk scan, start an abnormal application, etc.);

4, can only be in safe mode Or command line mode startup;

5, failed login, error or crash;

6. When the operating system is shut down, it crashes or reports an error.

Third, possible parts

BIOS settings, boot files, device drivers, operating system /application configuration files; power, disk and disk drives, motherboards, signal lines, CPU, Memory, possibly other boards.

Fourth, judgment points /order

1, preparation before maintenance

1) disk data line;

2) multimeter;

3) Check the virus software.

2, environmental inspection

1) Machine perimeter and appearance inspection:

A. Whether the mains connection is reliable, there should be no loose or incomplete insertion;

B. The indicator light of the host hard disk is correct and should not be lit or bright;

C. Observe whether the system has odor and the temperature of the component is high.

D. Observe if the CPU fan speed is not enough, or if it is too slow or unstable;

E. Listen for abnormal noise when the drive is working.

2) Drive connection check:

A. The power connection of the drive is correct and secure. Whether the power connection socket on the drive has a virtual connection;

B. The jumper setting on the drive matches the position of the drive connection on the cable;

C. Does the drive data cable Misconnected or missed, the specifications are in accordance with the technical specifications of the drive (eg, 80-pin data cable must be used for drives supporting DMA66);

D. Is the drive data cable faulty (such as exposing the core wire, There are dead bends or hard marks, etc.), except that it can be judged by observation, or by replacing a data cable;

E. Whether the drive is connected to the system through other boards, or through other Board (such as hard disk protection card, dual network isolation card, etc.) to control.

3) Check the installation of other components: